TERMINALS OF ECU
NOTICE:
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CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
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*1 | Power Distribution Box Assembly | *2 | Main Body ECU (Multiplex Network Body ECU) |
(b) Reconnect the power distribution box assembly connectors.
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(c) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
---|---|---|---|
MB-13 (GND1) - Body ground | Ground | Always | Below 1 Ω |
MB-26 (BECU) - Body ground | Auxiliary battery power supply | Ignition switch off | 11 to 14 V |
MB-27 (IGR) - Body ground | IG power supply | Ignition switch off | Below 1 V |
Ignition switch ON | 11 to 14 V |
(d) Install the main body ECU (multiplex network body ECU) to power distribution box assembly.
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(e) Measure the voltage and check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
---|---|---|---|
4D-5 - Body ground | CXPI communication line | Ignition switch ON | Pulse generation |
4E-43 - Body ground | Rear window defogger signal (output) | rear window defogger switch off | Below 1.5 V |
rear window defogger switch on | 8 to 14 V | ||
4B-2 - Body ground | Mirror heater drive voltage (output) | Ignition switch ON, rear defogger switch off | Below 1.5 V |
Ignition switch ON, rear defogger switch on | 8 to 14 V | ||
4C-10 - Body ground | Power retract mirror motor drive voltage (output) | Outer rear view mirror assembly moves to the retracted position | Below 1.5 V |
Outer rear view mirror assembly not move | 8 to 14 V | ||
4C-21 - Body ground | Power retract mirror motor drive voltage (output) | Outer rear view mirror assembly moves to the return position | Below 1.5 V |
Outer rear view mirror assembly not move | 8 to 14 V |
CHECK SEMICONDUCTOR POWER INTEGRATION ECU
*a | Component without harness connected (Semiconductor power integration ECU) | - | - |
(a) Disconnect the cable from the negative (-) auxiliary battery terminal.
(b) Disconnect the A85 and A86 semiconductor power integration ECU connectors.
(c) Connect the cable to the negative (-) auxiliary battery terminal.
(d) Measure the resistance and voltage according to the value(s) in the table below.
Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
---|---|---|---|
A85-1 (+B) - Body ground | Auxiliary battery power supply | Ignition switch off | 8 to 14 V |
A86-5 (-S) - Body ground | Headlight ECU sub-assembly operation signal input | Ignition switch off | 6 V or higher |
Ignition switch ON | Below 1.7 V | ||
A86-16 (GND2) - Body ground | Ground | Always | Below 1 Ω |
A86-20 (IG) - Body ground | IG power supply | Ignition switch off | Below 1.5 V |
Ignition switch ON | 8 to 14 V | ||
A86-24 (-S) - Body ground | Headlight ECU sub-assembly operation signal input | Ignition switch off | 6 V or higher |
Ignition switch ON | Below 1.7 V | ||
A86-26 (GND1) - Body ground | Ground | Always | Below 1 Ω |
(e) Reconnect the A85 and A86 semiconductor power integration ECU connectors.
(f) Measure the voltage and check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition |
---|---|---|---|
A86-8 (CXPI) - Body ground | CXPI communication line | Ignition switch ON | Pulse generation |
A86-1 (L) - Body ground | Headlight ECU sub-assembly LH power supply | Ignition switch off | Below 3.0 V |
Ignition switch ON | 8 V or higher | ||
A86-2 (L)- Body ground | Headlight ECU sub-assembly RH power supply | Ignition switch off | Below 3.0 V |
Ignition switch ON | 8 V or higher | ||
A86-17 (L) - Body ground | Front fog light output | Front fog light not illuminated | Below 3.0 V |
Front fog light illuminated | 8 V or higher | ||
A86-18 (L) - Body ground | Front fog light output | Front fog light not illuminated | Below 3.0 V |
Front fog light illuminated | 8 V or higher |
No special break-in is necessary, but a few precautions in the first 600 miles (1,000 km) may add to the performance, economy, and life of the vehicle.
Do not race the engine. Do not maintain one constant speed, either slow or fast, for a long period of time. Do not drive constantly at full-throttle or high engine rpm for extended periods of time. Avoid unnecessary hard stops. Avoid full-throttle starts.